* WHAT...Long period very high northwest swell will result in
large breaking waves between 25 to 35 feet on north and west
facing beaches.

* WHERE...San Francisco, Coastal North Bay Including Point Reyes
National Seashore, San Francisco Peninsula Coast and Southern
Monterey Bay and Big Sur Coast.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion. Sneaker waves can unexpectedly run
significantly farther up the beach than normal, including over
rocks and jetties. These waves can suddenly knock people off
their feet and quickly pull them into the cold ocean waters,
where currents will be stronger than normal. These waves can
also carry driftwood logs and other debris.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.